Treffer: Vorticity budget over mountains, estimated from HIRLAM analyses and forecasts

Title:
Vorticity budget over mountains, estimated from HIRLAM analyses and forecasts
Authors:
RONTU, Laura
Source:
ICAM/MAP2005 International Conference on Alpine Meteorology and Mesoscale Alpine Program Meeting, 23-27 May 2005, Zadar, CroatiaMeteorologische Zeitschrift (Stuttgart). 15(2):199-206
Publisher Information:
Berlin: Gebrüder Borntraeger, 2006.
Publication Year:
2006
Physical Description:
print, 21 ref
Original Material:
INIST-CNRS
Subject Terms:
Environment, Environnement, Climatology, meteorology, Climatologie, météorologie, Sciences exactes et technologie, Exact sciences and technology, Terre, ocean, espace, Earth, ocean, space, Geophysique externe, External geophysics, Météorologie, Meteorology, Analyse et prévision du temps, Weather analysis and prediction, Océan Atlantique, Atlantic Ocean, Océano Atlántico, Analyse météorologique, Analysis of meteorological field, Análisis meteorológico, Assimilation donnée, Data assimilation, Asimilación dato, Bilan vorticité, Vorticity budget, Balance vorticidad, Europe, Europa, Haute résolution, high resolution, Alta resolucion, Massif montagneux, mountains, Macizo montañoso, Modèle 3 dimensions, three-dimensional models, Modelo 3 dimensiones, Orographie, Orography, Performance algorithme, algorithm performance, Pertinence prévision, Forecast skill, Pertinencia previsión, Prévision météorologique, Weather forecast, Previsión meteorológica, Prévision numérique, Numerical forecast, Previsión numérica, Modèle zone limitée, Limited area model, Predicción área limitada
Subject Geographic:
Océan Atlantique Nord, North Atlantic, Océano Atlántico Norte
Document Type:
Konferenz Conference Paper
File Description:
text
Language:
English
Author Affiliations:
Finnish Meteorological Institute, Helsinki, Finland
ISSN:
0941-2948
Access URL:
http://pascal-francis.inist.fr/vibad/index.php?action=search&terms=17779301
Rights:
Copyright 2006 INIST-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
Notes:
External geophysics
Accession Number:
edscal.17779301
Database:
PASCAL Archive

Weitere Informationen

The analysis of vorticity budgets offers a possibility for validation and diagnosis of a NWP model. The source terms of the equation are related to the resolved and subgrid-scale torque due to the orography and surface properties. In this study, the vorticity method was applied to the diagnosis of High Resolution Limited Area Model (HIRLAM). The terms resolved by the model were estimated from three-dimensional numerical analyses and forecasts. In the vertically integrated equation, these terms sum up to give an estimate of required torque due to the subgrid-scale surface stress, which was compared with the corresponding value given by the physical parametrizations of the model. The magnitude of the parametrized subgrid-scale torque was about a half of that derived from the integrated vorticity budget. Diagnosis of the complicated terms of the equation requires special attention to the discretization and numerical approximations. A detailed discussion of the advantages and disadvantages of the method is included.